Arid
DOI10.1007/s11356-017-8937-1
Strategic tillage in conservation agricultural systems of north-eastern Australia: why, where, when and how?
Dang, Yash Pal1; Balzer, Anna1; Crawford, Mark2; Rincon-Florez, Vivian1; Liu, Hongwei1; Melland, Alice Rowena3; Antille, Diogenes3; Kodur, Shreevatsa3; Bell, Michael John1; Whish, Jeremey Patrick Milroy4; Lai, Yunru1; Seymour, Nikki5; Carvalhais, Lilia Costa1; Schenk, Peer1
通讯作者Dang, Yash Pal
会议名称International Conference on Conservation Agriculture and Sustainable Land Use (CASLU)
会议日期MAY 31-JUN 02, 2016
会议地点Budapest, HUNGARY
英文摘要

Farmers often resort to an occasional tillage (strategic tillage (ST)) operation to combat constraints of no-tillage (NT) farming systems. There are conflicting reports regarding impacts of ST and a lack of knowledge around when, where and how ST is implemented to maximise its benefits without impacting negatively on soil and environment. We established 14 experiments during 2012-2015 on farms with long-term history of continuous NT to (i) quantify the associated risks and benefits to crop productivity, soil and environmental health and (ii) explore key factors that need to be considered in decisions to implement ST in an otherwise NT system. Results showed that introduction of ST reduced weed populations and improved crop productivity and profitability in the first year after tillage, with no impact in subsequent 4 years. Soil properties were not impacted in Vertosols; however, Sodosols and Dermosols suffered short-term negative soil health impacts (e.g. increased bulk density). A Sodosol and a Dermosol also posed higher risks of runoff and associated loss of nutrients and sediment during intense rainfall after ST. The ST reduced plant available water in the short term, which could result in unreliable sowing opportunities for the following crop especially in semi-arid climate that prevails in north-eastern Australia. The results show that generally, there were no significant differences in crop productivity and soil health between tillage implements and tillage frequencies between ST and NT. The study suggests that ST can be a viable strategy to manage constraints of NT systems, with few short-term soil and environmental costs and some benefits such as short-term farm productivity and profitability and reduced reliance on herbicides.


英文关键词Crop productivity Environmental impact No tillage Soilhealth Strategic tillage Conservation agriculture
来源出版物ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
EISSN1614-7499
出版年2018
卷号25
期号2
页码1000-1015
出版者SPRINGER HEIDELBERG
类型Article;Proceedings Paper
语种英语
国家Australia
收录类别SCI-E ; CPCI-S
WOS记录号WOS:000419944100005
WOS关键词SOIL ORGANIC-MATTER ; SHORT-TERM IMPACT ; ONE-TIME TILLAGE ; NO-TILLAGE ; OCCASIONAL TILLAGE ; FARMING SYSTEMS ; GROWING REGIONS ; CROP YIELDS ; MANAGEMENT ; PARTICULATE
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/308013
作者单位1.Univ Queensland, Sch Agr & Food Sci, St Lucia, Qld, Australia;
2.Dept Nat Resources & Mines, Toowoomba, Qld, Australia;
3.Univ Southern Queensland, Toowoomba, Qld, Australia;
4.CSIRO, Toowoomba, Qld, Australia;
5.Dept Agr & Forestry, Toowoomba, Qld, Australia
推荐引用方式
GB/T 7714
Dang, Yash Pal,Balzer, Anna,Crawford, Mark,et al. Strategic tillage in conservation agricultural systems of north-eastern Australia: why, where, when and how?[C]:SPRINGER HEIDELBERG,2018:1000-1015.
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